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Title: Bogoliubov coefficients for the twist operator in the D1D5 CFT

Here, the D1D5 CFT is a holographic dual of a near-extremal black hole in string theory. The interaction in this theory involves a twist operator which joins together different copies of a free CFT. Given a large number of D1 and D5 branes, the effective length of the circle on which the CFT lives is very large. We develop a technique to study the effect of the twist operator in the limit where the wavelengths of excitations are short compared to this effective length, which we call the ‘continuum limit’. The method uses Bogoliubov coefficients to compute the effect of the twist operator in this limit. For bosonic fields, we use the method to reproduce recent results describing the effect of the twist operator when it links together CFT copies with windings M and N, producing a copy of winding . We also comment on possible generalizations of our results. The methods developed here may help in understanding the twist interaction at higher orders. This in turn should provide insight into the thermalization process in the D1D5 CFT, which gives a holographic description of black hole formation.
Authors:
 [1] ;  [1] ;  [1]
  1. The Ohio State Univ., Columbus, OH (United States). Dept of Physics
Publication Date:
Grant/Contract Number:
SC0011726
Type:
Published Article
Journal Name:
Nuclear Physics. B
Additional Journal Information:
Journal Volume: 889; Journal Issue: C; Journal ID: ISSN 0550-3213
Publisher:
Elsevier
Research Org:
The Ohio State Univ., Columbus, OH (United States)
Sponsoring Org:
USDOE Office of Science (SC)
Country of Publication:
United States
Language:
English
Subject:
72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS
OSTI Identifier:
1197895
Alternate Identifier(s):
OSTI ID: 1455050

Carson, Zaq, Mathur, Samir D., and Turton, David. Bogoliubov coefficients for the twist operator in the D1D5 CFT. United States: N. p., Web. doi:10.1016/j.nuclphysb.2014.10.018.
Carson, Zaq, Mathur, Samir D., & Turton, David. Bogoliubov coefficients for the twist operator in the D1D5 CFT. United States. doi:10.1016/j.nuclphysb.2014.10.018.
Carson, Zaq, Mathur, Samir D., and Turton, David. 2014. "Bogoliubov coefficients for the twist operator in the D1D5 CFT". United States. doi:10.1016/j.nuclphysb.2014.10.018.
@article{osti_1197895,
title = {Bogoliubov coefficients for the twist operator in the D1D5 CFT},
author = {Carson, Zaq and Mathur, Samir D. and Turton, David},
abstractNote = {Here, the D1D5 CFT is a holographic dual of a near-extremal black hole in string theory. The interaction in this theory involves a twist operator which joins together different copies of a free CFT. Given a large number of D1 and D5 branes, the effective length of the circle on which the CFT lives is very large. We develop a technique to study the effect of the twist operator in the limit where the wavelengths of excitations are short compared to this effective length, which we call the ‘continuum limit’. The method uses Bogoliubov coefficients to compute the effect of the twist operator in this limit. For bosonic fields, we use the method to reproduce recent results describing the effect of the twist operator when it links together CFT copies with windings M and N, producing a copy of winding . We also comment on possible generalizations of our results. The methods developed here may help in understanding the twist interaction at higher orders. This in turn should provide insight into the thermalization process in the D1D5 CFT, which gives a holographic description of black hole formation.},
doi = {10.1016/j.nuclphysb.2014.10.018},
journal = {Nuclear Physics. B},
number = C,
volume = 889,
place = {United States},
year = {2014},
month = {10}
}